Tag: Installation Contractor Education
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NEC 2020 | 690 | MLPE voltage and current values
Module level power electronics (MLPE) are common in PV systems these days, and there are a few specific code sections concerning the voltage and current values of these systems. On this edition of Mayfield Renewables’ Code Corner, CEO Ryan Mayfield gives a great overview. Applicable code sections explained in this short video include NEC 2020……
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How large-format solar modules disrupt off-grid design
The following article was sent by the charge controller experts at Morningstar Corp. We are hosting a Morningstar webinar on Nov. 17, covering off-grid innovations. Sign up here to join us live or to watch on-demand. The “large format” 72 cell nominal 24 V solar module has been a staple of industrial and other off-grid……
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Safety beyond NEC 690: How pairing with IEC, UL and IEEE standards mitigates solar install risks
As commercial and utility-scale solar projects become more widespread, fires and failures shouldn’t. Unfortunately, the number of rooftop solar installation fires in the United States each year increased 69 percent between 2016 and 2018, according to U.S. Fire Administration data. Unprotected, improperly connected or incompatible connectors are some of theRead More — Solar Builder magazine
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Four reasons residential solar + storage installations are surging in the U.S.
Until recently, most solar + storage systems have been out of reach of average homeowners. At first, that was because solar systems were expensive, even with the Investment Tax Credit (ITC) from the U.S. government. Then, as solar prices tumbled thanks to inexpensive imported panels, the sticking point became energyRead More — Solar Builder magazine
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Lock that box: Deadly hazard posed by switch disconnects in PV systems addressed in NEC 2020
While we’ve all been busy figuring out the various ways to comply with NEC 2017 and 2020 rapid system shutdown, NEC 2020 includes another PV system-specific code update that’s arguably more of an everyday potential safety hazard, specifically for children. Highlighted by world-renowned electric code guru Mike Holt in aRead More — Solar Builder magazine